keysym(-KeysymSet) keysym(?Keysym, ?Key)
is true when KeysymSet is an atom giving the name of a pre-loaded
keysym. The preloaded keysym sets are:
is true when Keysym is the integer, server-independent keysym
for the the key named Key, which is an atom. In general, the
name of a key is just the atom (quoted, if necessary). See the
Xlib documentation on keysyms for a list of the keysyms and key names.